JPS5929215Y2 - Knob fixing device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a fixing device for a shaft and a knob body.

The purpose of this invention is to align the centers of the knob body and the knob shaft, and to fix the knob body to the knob shaft with a large holding force.
Moreover, the objective is to provide a knob fixing device that has a good appearance because the tightening mechanism of the knob shaft is not visible from the outside, and can be commonly used even if the diameter and length of the knob shaft are changed.

Hereinafter, embodiments of the present invention will be described based on the drawings.

Reference numeral 1 denotes a knob body made of a synthetic resin material, and a large-shaped (large-diameter) hole 2a is provided upwardly in the center of the knob body.

A through-hole 2 having stepped portions 1d and 1e with a medium-sized hole 2b in a rectangular shape such as a hexagon in the middle and a small-sized (small diameter) hole 2c in the lower part is provided concentrically through the hole 2 in the vertical direction.

Reference numeral 3 denotes a cylindrical mounting member made of a metal material, on the outside of which is formed an upper fitting part 3a of a rectangular shape such as a hexagon that fits into the medium-shaped hole 2b of the knob main body 1, and a lower part. A lower fitting part 3b is formed to fit into the small hole 2c of the knob body 1, and a female screw part 3c is formed in the upper part and a guiding funnel-shaped hole 3d is formed in the lower part. The mounting member 3 is inserted into the medium-shaped hole 2b and the small-shaped hole 2c of the through hole 2 of No. 1 to prevent free rotation within the knob body 1.

2e and 3e are concave and convex engaging parts provided on the knob body 1 and the attachment member 3 to prevent the attachment member 3 from being pulled out upwards, and when the attachment member 3 is inserted, the small shape of the knob body 1 The concavo-convex retaining portion 2e is once bent outwardly along with the wall of the hole 2c, and is fitted and locked into the concave-convex retaining portion 3e of the mounting member 3.

Reference numeral 4 denotes a cylindrical tightening arm made of a metal material, which has a plurality of longitudinal grooves 4a formed on its lower outer periphery, a knob shaft 10 inserted into a through hole 4b drilled inside, and its lower end used for guiding. Funnel hole 3
d at the inner lower part of the mounting member 3.

Reference numeral 5 denotes a cylindrical pressing piece made of a metal material, which has a through hole 5a on the inside through which the knob shaft 10 can be inserted, and a retaining part 5b such as a hexagon on the outside that engages with a box spanner at the top. At the same time, a threaded portion 5c is formed on the outer periphery of the lower portion, and is screwed onto the inner upper portion of the mounting member 3.

Reference numeral 6 denotes a cover made of a synthetic resin material, and the leg portion 6a provided at the lower part of the cover is press-fitted into the large hole 2a of the through hole 2, and the leg portion 6a is inserted into the undercut 2d provided in the large hole 2a. The outer peripheral convex surface 6d of the knob body 1 is fitted to cover the upper part of the knob body 1.

To fix the knob body 1 to the knob shaft 10, insert the knob shaft 10 inside the tightening arm 4 from below the knob body 1, and engage the box spanner with the engaging portion 5b of the pressing piece 5. Rotate the pressing piece 5 and attach the male threaded part 5c of the pressing piece 5 to the mounting member 3.
By screwing into the female threaded portion 3c and pressing the upper end surface of the tightening arm 4 with the lower end surface of the pressing piece 5, the lower end outer peripheral surface of the tightening arm 4 is guided into the guiding funnel-shaped hole 3d of the mounting member 3. It is pressed inward and pressed onto the knob shaft 10.

In this state, the center of the knob body 1 and the center of the knob shaft 10 are aligned and fixed.

The attachment of the knob body 1 and the knob shaft 10 is then completed by covering the outer peripheral surface of the upper end of the through hole 2 of the knob body 1 with the cover 6.

At this time, the through hole 4 b t 5 of the tightening arm 4 and the pressing piece 5
Since a is connected, the fixing position of the knob body 1 can be adjusted by moving the knob shaft 10 up and down inside.

To remove the knob body 1 from the knob shaft 10, remove the cover 6 from the knob body 1 in the opposite manner as described above, and loosen the pressing piece 5 with a box spanner.

Therefore, the tightening force of the clamping arm 4 that was tightening the knob shaft 10 is lost, and the knob body 1 is freed from the knob shaft 10 with the knob body 1, pressing piece 5, clamping arm 4, and mounting member 3 still connected. It can be pulled out.

Since this invention is authoritative as mentioned above, it is possible to align the centers of the knob body and the knob shaft and fix the knob body to the knob shaft with a large holding force, and the tightening mechanism of the knob shaft can be seen from the outside. Since the cover is removable, the appearance can be improved, and even if the diameter or length of the knob shaft changes to some extent, it can be used in common.Also, since the cover is removable, the display can be different depending on the purpose. If you prepare a wide variety of items, you can use them for multiple purposes just by replacing the cover.

[Brief explanation of drawings]

FIG. 1 is an enlarged vertical sectional view of an embodiment of the present invention, and FIG. 2 is a partially cutaway and exploded front view of the embodiment of the present invention. 1...Knob body, 2...Through hole, 2
a...Large-shaped hole, 2b...Medium-shaped hole, 2c...Small-shaped hole, 3...Mounting member, 3a... ...Dobe fitting part, 3b...
Lower fitting part, 3c...Female thread part, 3d...
...Guiding funnel-shaped hole, 4...Tightening arm, 4a...
...Vertical groove, 4b...Through hole, 5...
...Press piece, 5a...Through hole, 5b...
- Engagement part, 6... Cover, 6a... Leg part, 10... Knob shaft.

Claims (2)

[Scope of utility model registration request] (1) Concentrically arranged from the top to the bottom of the center, a large hole 2a, a square medium hole 2b, and a small hole 2
c is a knob body 1 with a through hole 2 formed in a stepped shape and a concave-convex engaging portion 2e on the inner periphery of a small hole 2c, and a medium-shaped hole 2b of the knob body 1 is fitted in the outer upper part. A rectangular upper fitting part 3a is formed, and a knob main body 1 is provided at the lower part.
forming a lower fitting portion 3b that fits into the small hole 2c;
A concave-convex engaging part 3e that engages with the concave-convex engaging part 2e of the knob body 1 is formed on the outer periphery of the lower fitting part 3b, and a female threaded part 3c is formed on the inside at the upper part, and a guiding funnel-shaped part is formed at the lower part. A mounting member 3 is formed with a hole 3d and inserted into the through hole 2 of the knob body 1, and a plurality of vertical grooves 4a are formed on the outer periphery of the lower part,
The clamping piece 4 is arranged at the lower inner side of the mounting member 3 by inserting the knob shaft 10 into a through hole 4b drilled on the inside, and the tightening piece 4 is provided at the inner lower part of the mounting member 3. An engaging part 5b of a pock spanner is formed on the bottom, and a threaded part 5c is formed on the outer periphery of the lower part. It consists of a cover 6 that locks onto the inner wall of the knob body 2a and is removably disposed on the upper part of the knob body 1.A pressing piece 5 is screwed into the mounting member 3, and its lower end presses the tightening piece 4 to tighten it. A knob fixing device characterized in that the lower end of the attachment piece 4 is guided through a guiding funnel-shaped hole 3d of the mounting member 3 to reduce its inner diameter and tighten the knob shaft 10. (2) The knob main body 1 and cover 6 are made of synthetic resin material, and the mounting member 3, tightening piece 4, and pressing piece 5 are made of metal material, as described in claim 1 of the utility model registration claim. Knob fixing device.